Inspired by Harper's Index (with a tip of the hat to FiveThirtyEight's Significant Digits blog), Morningstar Runs the Numbers uses a numbers-based approach to highlight recent Morningstar research, along with some outside news stories.

9 Morningstar released our updated ratings for 529 plans, which included two upgraded plans and nine downgrades. Why did these funds get knocked down? Often it was because of fees.

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